What is the maximum leakage current allowed through insulation for each 1000 V of operating voltage?

The accepted standard for maximum leakage current through insulation is typically based on a 1 mA threshold for every 1000 volts of operating voltage. This means that as the voltage increases, the permissible leakage current proportionately increases, allowing for 1 mA of leakage current for each 1000 volts. This is a safety guideline aimed at ensuring that electrical systems are sufficiently insulated to prevent hazardous conditions arising from excessive leakage currents that could lead to electric shock or potential equipment damage.

In this context, while lower leakage current thresholds may be too restrictive, allowing for up to 1 mA per 1000 V ensures that systems remain safe and operational. This standard is often employed in various electrical safety codes and regulations, underlining the importance of proper insulation in high-voltage applications.